UPM Institutional Repository

Physicochemical properties of pomelo (Citrus grandis L. Osbeck) byproducts


Abd Rahman, Nur Farhana and Shamsudin, Rosnah and Ismail, Amin and Abdul Karim Shah, Nor Nadiah and Varith, Jaturapatr (2019) Physicochemical properties of pomelo (Citrus grandis L. Osbeck) byproducts. In: Konvensyen Kebangsaan Kejuruteraan Pertanian dan Makanan 2019, 21 Mac 2019, Wisma Tani, Kementerian Pertanian & Industri Asas Tani, Putrajaya. (pp. 126-129).


Pomelo (Citrus grandis L. Osbeck) is known as the largest citrus fruit in the worlds. The fresh pulp often consumed directly meanwhile pomelo byproducts including peels; exocarp: flavedo and endocarp: albedo and lamella were discarded. A significant yield of waste was produced and may result in high cost of waste management. Therefore, the present study was carried out after freeze-drying (FD) to discover the physico-chemical properties (water activity (aw), total soluble solids (TSS), pH and vitamin C) of pomelo byproducts (flavedo, albedo and lamella). Results showed that the overall byproducts contain lower water activity (<0.7) value after dried, whereas for TSS albedo (2.43°Brix) and lamella (2.23°Brix) showed significantly (p <0.05) higher value compared to flavedo (1.77°Brix). Similar with pH analysis, significant lower value of flavedo (5.44) was observed in comparison with albedo (5.78) and lamella (5.70). Nevertheless, lower pH value indicates the presence of higher concentration of vitamin C in flavedo (30.52 mg AA/100g DW) more than albedo (25.83 mg AA/100g DW) and lamella (17.48 mg AA/100g DW). Noteworthy information of the byproducts could be further applied in nutraceutical approach and functional foods for commercial purposes.

Download File

[img] Text
Restricted to Repository staff only

Download (149kB)

Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Engineering
Faculty of Medicine and Health Science
Halal Products Research Institute
Publisher: Malaysian Society of Agricultural Engineers
Keywords: Physicochemical; Pomelo byproduct; Water activity; pH; Vitamin C
Depositing User: Nabilah Mustapa
Date Deposited: 05 Feb 2020 04:20
Last Modified: 05 Feb 2020 04:20
URI: http://psasir.upm.edu.my/id/eprint/76545
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item